Heat Shrinkable Tubing, Heat Shrinkable Tube, Heat Shrinkable Sleeve

Our exceptionally durable H421 adhesive-lined semi-rigid polyolefin heat shrinkable tubing offers a versatile and highly reliable heat shrink tubing solution for a wide range of electrical cable and wire protection applications.

When heated in excess of 121°C (250°F), H421 heat shrinkable sleeving rapidly shrinks to a skintight fit, forcing the melted adhesive lining to flow and cover the underlying substrate. Upon cooling, the heat shrinkable sleeve adhesive solidifies, forming a permanent, non-drying, flexible and water resistant protective barrier against a vast assortment of harsh environmental conditions.

H421 heat shrinkable tubing has a 4:1 shrink ratio, meaning when it is freely recovered, the tubing will shrink to 25% of its as-supplied diameter.

Standard Heat Shrinkable Tube Colors: Black
Standard Heat Shrinkable Tube Packaging: 4' lengths. Cut pieces are available subject to quotation.

Download Heat Shrinkable Tubing Specifications (PDF)

Part #-Size (in.)	Expanded ID		Recovered ID		Recovered Wall Thickness		Meltable Recovered Wall Thickness
Part #-Size (in.)	Inch	mm	Inch	mm	Inch	mm	Inch	mm
H421-.300 H421-.350 H421-.450 H421-.700	.300 .350 .450 .700	7,62 8,89 11,43 17,78	.060 .080 .105 .175	1,52 2,03 2,67 4,45	.033 .038 .043 .060	0,84 0,97 1,09 1,52	.028 .033 .053 .055	0,71 0,84 1,35 1,40

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